Caster.



No. 725,325. PATENTED APP.. 14., 190s.` A. B. mss.

A GASTER. APPLIOATION FILED MAY 24, 1902.

. N0 MODEL.

MMM

UNITED STATES PATENT OFFICE.

ALBERT B. DISS, OF BROOKLYN, NEW YORK.

CASTER.

SPECIFICATION forming part of (Letters Patent N o. 725,325, dated April 14, 1903. 'Application sled May 24,1902. yse'ri..1iro.1c)t.751. (No twaalf To all whom it may concern:

zen of theUnited States, residing in the borough of Brooklyn, in the county of Kings,

City and State of lNew York, have invented an Improvement in Casters, of which t-he following is a specication.

My invention relates to theclass of castersV formed mainly of stamped-upparts of sheet metal adapted to be `received and held frictionally in place within the tubular; leg, usually of metal, of a bedstead or other article of furniture, the object of my invention being to simplify the structure, reduce the cost and the number of parts.

In carrying out my invention and in com-l bination Withfthe caster-wheel, jaws, and the pintle I employ a spring-frame of peculiar form spanning the pintle and having an aperture through which the pintle passes and a disk surrounding the pintle and through an aperture in which the pintle passes and resting above the enlarged part or collar of the pintle at the point of attachment thereto of the jaws. This disk is provided with means for stiening the same to prevent dis-` tortion under the weight supported and means for receiving the reduced free `ends of the spring-frame and for limiting the compressive movement thereof. I prefer that this means consist of flanges stamped out of the sheet metal of the disk at opposite sides of the" central aperture and which are benty upward at right angles tothe plane of the disk and are parallel to one another. These Iianges both stiften the disk and act as stops to limit the compressive movement of the free ends of the spring-frame, which are re- Ceived and guided in the mort-ises of the disk made thereby.

In the drawings, Figures l and 2 are vertical sections and partial elevations representing my improvement, the one being taken at right angles to the other. Fig. 3 is a sectional plan at a: a: of Fig. 1. Fig. ,4 is a vertical section representing my improvement, but without the tubular leg. VF-ig. 5 is a plan of the disk alone, and Fig. 6 is a View representing the spring-frame as laid out dat.

The caster-wheel a, the jaws b, the pintle c, the pintle-collar or enlarged portion c', and the washer a.' at the point of connection of the pintle with the jaws b are all of usual and Well-known construction and do not re- -quire further description.

The spring-frame e has a central aperture 3 receiving the pintle, and this spring-frame spans the pintle Within the tubular leg d, and lugs 2 of usual construction and formed upon the pintle are employed for holding the springframe e to the pintle. The diskf has a central aperture for the pintle, and the same surrounds the pintle and rests upon the pintle-collar c', and upon this diskf the tubular legal rests and isl supported. The spring-frame e and the disk f are of peculiar construction-that' is to say, the spring frame e is provided with rounded corners 4 and with reduced ends 5, and except for these partstheedges of the spring-frame are parallel to one another. This springframe is bent upon imaginary lines at either side of the central aperture 3, which lines are at right angles'to the edges, so that the frame assumes the shape shown in Fig. 4 when in a normal position.`

The disk f is provided with-mortises 6 and flanges 7, the mortises .being upon either side of the central aperture which receives the pintle, and they are of rectangular form and are substantiallyparallel, and they are formed by cutting out of the metal of the disk the anges the disk, and the flanges are preferably parallel with one another at opposite sides of the central aperture of the disk receiving the pintle:

As the parts are assembled the reduced ends 5 of the spring-frame e are received in the mortises 6, and the flanges 7 of the disk f come within the conformation of the springframe and parallel to the adjacent parts thereof. In the normal position of the springframe the reduced ends 5 of the spring-frame contact with the outer edges of themortises to limit the outward expansibility of said frame, and the [langes 7, when the tubular leg is forced over the spring-frame, come into proximity with the lower free ends of the spring-frame and limit any sidewise movement of the parts under tension. When the caster is out of the tubular leg, said flanges limit the compressive movement of the spring- ICO frame caused by applying pressure by hand or otherwise thereto. The flanges 7 perform the further and important function of stiffening the disk f, so as to enable the same to carry its proportional weight of the bedstead or other article of furniture.

Upon reference to Fig-5 it will be apparent that the stiffening` function of the flanges 7 with reference to the disk f is between the dotted lines 8 and 9 and that these opposite points of the disk substantially carry the entire weight upon the disk without reference to the periphery of the disk embraced by the arc outside of these lines, these latter parts serving to maintain the integrity of the disk to serve as parts in which the rectangular mortises are formed and limit the expansibility of the spring-frame.

In practice it is intended that as the caster is slipped to place the tubular leg shall commence its compressive action on the springframe at about the dotted line 10 and that the respective edges of the said spring-frame from this point down to the rounded corners 4, adjacent to the disk f, shall all bear upon and contact with said tubular leg, thus insuring the centering of the pintle within the tubular leg and ample frictional contact of the spring-frame therewith to prevent the caster accidentally falling out of the tubular leg. The round corners 4 of the spring-frame have a function peculiar to themselves in that they prevent the caster being locked in the tubular leg because of any bu rs or roughened edges that may have been produced in sawing off the lengths of tubular legs at the end receiving the caster, these round corners passing over such obstructions and permitting the ready removal of the caster whenever desired. A

I claim as my inventionl. The combination with the caster-wheel, jaws and pintle, of a disk surrounding the pintle and upon which the tubular leg rests, flanges formedV integral with the disk at opposite sides of the pintle for stiffening the said disk to enable it to act more perfectly as a support for the tubular leg, a spring-frame spanning the pintle within the tubular leg and acting outwardly against the inner surface of the tubular leg to maintain the same centrally in position and the caster frictionally in the tubular leg, substantially as specified.

2. The combination with the caster-wheel, jaws and pintle, of a disk surrounding the pintle and upon which the tubular leg rests, means for stiffening the said disk to enable it to act more perfectly as a support for the tubular leg, a spring-frame spanning the pintle within the tubular leg and acting outwardly against the inner surface of the tubularleg to maintain the same centrally in position and the caster frictionally in the tubularleg, said spring-frame having parts coacting with the said disk to limit both the exceases pansive and the compressive movements of said spring-frame, substantially as set forth.

3. The combination with the caster-wheel, jaws and pintle, of a disk surrounding the pintle andupon which the tubular leg rests, a spring-frame spanning the pintle within the tubular leg and acting outwardly against the inner surface of the tubular leg to maintain the same centrally in position and the caster frictionally to the tubular leg, said springframe having reduced free ends and adjacent rounded corners, and means coacting therewith and with the disk for limiting the compressive movement of the spring-frame, substantially as set forth.

4E. The combination with the caster-wheel, jaws and pintle, of a spring-frame spanning the pintle within the tubular leg and acting outwardly against the inner surface of the tubular leg to maintain the same centrally in position and the caster frictionally to the tubular leg, and a disk having a central aperture for the pintle and surroundingthe same and having apertures upon opposite sides of the center, and integral anges formed by stamping up the metal out of the disk to form the apertures and turning the same up at right angles to the disk, whereby said iianges are substantially parallel to one another and come at opposite sides of the center of the disk and act to stiifen the disk so as to adapt the same to support the tubular leg without distortion.

5. The combination with the caster-wheel, jaws and pintle, of a spring-frame spanning the pintle Within the Vtubular leg and acting outwardly against the inner surface of the tubular leg to maintain the same centrally in position and the caster frictionally to the tubular leg, anda disk having a central aperture for the pintle and surrounding the same and having mortises 6 upon opposite sides of the center and of substantially elongated rectangular form, and integral flanges formed by stamping the metal out of the disk to form the mortises and turning the same up at right angles to the disk whereby said flanges are substantially parallel to one another and come at opposite sides of the center of the disk and act to stiffen the disk so as to adapt the same to support the tubular leg without distortion and together with the mortises limit both the compressive and expansive movements of the spring-frame, substantially as set forth.

6. The combination with the caster-wheel, jaws and pintle,of a disk having a central aperture and surrounding the pintle resting upon the collar thereof and upon which the tubular leg rests, said disk having elongated substantially parallel mortises upon opposite sides of the center, and integral flanges formed therewith by cutting the metal of the disk to form the mortises and turning the same up at right angles to the plane of the disk whereby said flanges are substantially IOO IIO

parallel to one anotherupon opposite sides of of the disk and adjacent rond corners- 45,` Lhe center of the disk, and va spring-frame substantiallyasand forthepurposessetforth. -Io spanning the pintle within the tubular leg Signed by me this 20th day of May, 1902.

and aotinfr outwardly affainsb the inner sur- 5 face of thi; tubular leg o maintain the same ALBERF B DISS centrally in position and the caster friction- Witnesses: ally in the tubular leg, said spring-frame hav- GEO. T. PINCKNEY,V

ing reduced ends 5 received in the mortises S. T. HAVILAND. 

